Assessing the impact of diverse mask types on COPD patients: a randomised controlled trial study protocol.
Xuwen ChenXiaomei JiangXuhui ZhangDong RenCaihong WeiAihong XuHong YangRuijia BaiCaiyun LiFeiyan YueShisan BaoJungang ShiJing-Chun FanPublished in: BMJ open (2024)
ChiCTR2300074554.